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A new analysis of plants in grassland ecosystems around the world has revealed that most grassland plant species are important to the ecosystem at some point.

The new multi-year, multi-context study indicates that 84% of plant species are important to the ecosystem. Previous, single context studies indicated that it was only around 27% of plant species.

“What we found was that if you run the analysis over several years, sites or environmental-change contexts, many different species become important. This study really brought everything together,” associate professor Brian Wilsey said.